7th Grade Science Student ebook

CHAPTER 2 LIVING THINGS

Chapter 2 Assessment

Vocabulary

Select the correct term to complete the sentences.

Section 2.1

1. An ____ exhibits the characteristics of life.


2. Organisms react to environmental ____, such as heat,
   sunlight and nutrient availability.


3. An expected ____ to touching a hot stove is to flinch away
   from the heat.


4. All living things are made up of ____, the basic unit of life.


5. Life requires ____ in different forms to perform functions.
   Section 2.2


6. ____ are groups of similar cells that are specialized to carry
   out a particular function.


7. ____ are groups of tissues that organize to perform a
   function.


8. Organs interact in groups called ____ to perform related
   tasks.


9. ____ is a process by which organisms maintain stable
   internal conditions suitable for life.
   Section 2.3


10. The science of identifying and grouping organisms based on
    similarities is named ____.


11. Populations of interbreeding individuals who can produce
    fertile offspring are called a ____.

Concepts

Section 2.1

1. While hiking in the Sierra Nevada, you find an strange
   object. What steps are needed to determine if the object is
   alive?


2. During metamorphosis, tadpoles gradually lose their tail
   and form legs. This is an example of
   a. reproduction.
   b. growth and development.
   c. responding to the surrounding environment.
   d. evolving to the change in oxygen availability.


3. A world-class cyclist training for the Tour de France
   increases his respiration rate while pedaling up hills. What
   characteristic of life does this represent?


4. Zeedonks, animals that are the cross between a zebra and a
   donkey, cannot breed on their own. If zeedonks were
   isolated how would this affect their population? Using the
   zeedonk as an example, explain why reproduction is such an
   important characteristic of life?


5. Which is an example of chemical energy?
   a. The breakdown of large carbohydrate molecules into
   smaller glucose molecules.
   b. Solar powered space probes providing images of distant
   planets.
   c. Energy from the wind turns large turbines to provide
   electricity to homes and businesses.
   d. The splitting of uranium atoms to provide electricity for
   cities and towns
   Section 2.2


6. Describe examples of how the human body is organized to
   perform life functions.

stimuli

species

organism

taxonomy

energy

tissues

response

organs

organ systems

homeostasis

cells